52. GYMNOGRAMME, §§§§§ CEROPTEUIS. , 385 



only the lowest toothed ; powder briffht-yellow.— y, G. ornithj)pteris, Klotzsch ; 

 texture more coriaceous, edges of tlie divisions incurved ; powder white or yellow. 

 —Hk.' Sp. 5. p. 148.— ^, G. Steltzneri, Koch ; fr. elongated, flaccid ; pinn<e 

 lanceolate, subdistant ; powder yellow, thin ; st. and rachis pubescent. G. Bou- 

 cheaua, Meti. 



Hab. Tropical America. — There is no clear line of distinction between this and the 

 preceding. The forms associated here differ mainly from those jilaced under calomelanos 

 by being firmer in texture and less divided. 0. guiancnsls, Klotzsch, comes between 

 a and y, and 0. adiantoides, Karst., i.s said to differ from /3 by its sublanceolate outline 

 and acumin.ate pinnules. We cannot distinguish from G. ochracea a plant gathered by 

 Gerrard in Natal. 



64. G. (Cerop.) calomelanos, Kaulf. ; st. tufted, firm, 6-12 in. I., nearly black ; 

 ■^r. 1-3 ft. 1., 6-12«in. br., oblong-deltoid, tripinnatifid ; pinnce close, lanceolate, 

 the lowest the largest, sometimes 6 in. 1., 1^-2 in. br. ; lower pinnl. distinct, 

 lanceolate or subdeltoid, often cut dowii nearly to the rachis ; texture^ sub- 

 coriaceous or herbaceous ; powder white. — Hk. G. F. t. 80. — /3, G. peruviana, 

 Desv. ; fr. smaller ; st, and rachis castaneous ; lower pinna; deltoid ; lower 

 pinnl. often cut down to the rachis. — y, G. cJirysophylla, Kaulf. ; size and habit 

 of /?, but tlie rachis darker and the powder bright yellow. — Hk. Sp. 5. p. 148. 



Hab. West Indies, southward to Eio Janeiro, Peru, and Samoa ; Tropical West 

 African Islands. — We include here a wide range of forms connected by very gradual 

 intermediate stages. G. L'Hmminiefi, Martensii, and Massoni of Link, and C. inter- 

 media, F^e, are all intermediate between a and y. The Polynesian plant is 0. Bracktn- 

 ridyei of Carruthers. 



55. G. (Cerop.) pulchella, Linden ; st. tufted, firm, G-9 in. 1., dark chesnut- 

 brovvn, powdery ; fr. 0-12 in. 1., 4-6 in. br., oblong-deltoid, tripinnatifid ; lower 

 pinnw the largest, lanceolate-deltoid ; /'2?/h/. imbricated, the lower ones sub- 

 deltoid ; segm. flabellato-cuneate, often g in. br. ; texture herbaceous ; powder 

 pure white. — Hk. Fil. Ex. t. 74. 



Hab. Venezuela. — Joined in " Sp. Fil." to G. sidphurea, from which it differs by its 

 more robust habit, white powder, and frond broadest at the base. It comes very near 

 G. po-mnana. Var. Wettenhalliana, Moore, is a garden variety, with p.ale sulphur- 

 coloured powder. 



66. G. (Cerop.) snljyhurea, Desv. ; st. densel}' tufted, 1-6 in. I,, generally 

 shorty slender, chesnut-brown, often powdery ; /)•. 6-12 in. 1., 3-4 in. br., ovate- 

 lanceolate, tripinnatifid ; pinna; lanceolate, the lower ones gradually reduced ; 

 pinnl. flabellately cut, with entire or cleft cuneate segm. 1-1| lin. br. ; texture 

 herbaceous ; powder bright yellow. — Hk. Sp. 5. p. 147. 



Hab. West Indies. — Distinguished by its cutting, small size, herbaceous texture and 

 frond narrowed in the lower third. 



67. G. (Cerop.) argentea, Mett. ; st. tufted, slender, 3-6 in. 1., chesnut-brown, 

 glossy ; fr. 6-12 in. 1., subdeltoid, quadripinnatifid ; pi7in<:e not numerous, often 

 distant, deltoid, the lower ones 3-4 in. 1., 2 in. br. ; pinnl. and segm. deltoid, 

 the ult. divisions small, flabellato-cuneate ; texture herbaceous ; powder white 

 or tinged with red ; sori pale-brown. — G. conspersa, Kze. Hk. Sp, 5. p. 147. 

 G. farinosa, Bojer, G. rosea and Thiebautii, Desv. 



Hab. Llascaren Isles and Natal. — G. conspersa, Kze., appears to be a slender flaccid 

 form of the Mascaren species. G. aurea, Desv. (Acrostichum, Bory), ia a variety with 

 yellow powder found in Madagascar, Bourbon, and Angola. 



8c 



